Man accused of San Antonio VIA bus slaying had threatened stranger before

Zachary Gonzales is escorted out of San Antonio Police Deapartment Headquarters, Wednesday, Nov. 12, 2014. Gonzales was arrested earlier in the day on murder charges stemming from Tuesday's VIA bus shooting of Donovan Rae Arzola, 23. He was shot while riding the bus near downtown.

Zachary Gonzales is escorted out of San Antonio Police Deapartment Headquarters, Wednesday, Nov. 12, 2014. Gonzales was arrested earlier in the day on murder charges stemming from Tuesday's VIA bus shooting of

Zachary Gonzales is escorted out of San Antonio Police Deapartment Headquarters, Wednesday, Nov. 12, 2014. Gonzales was arrested earlier in the day on murder charges stemming from Tuesday's VIA bus shooting of Donovan Rae Arzola, 23. He was shot while riding the bus near downtown.

Zachary Gonzales is escorted out of San Antonio Police Deapartment Headquarters, Wednesday, Nov. 12, 2014. Gonzales was arrested earlier in the day on murder charges stemming from Tuesday's VIA bus shooting of

Man accused of San Antonio VIA bus slaying had threatened stranger before

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About a year before Zachary Gonzales allegedly killed a stranger in an unprovoked attack on a VIA bus, the 21-year-old threatened to kill a woman who was walking her dog.

The woman, in an exclusive interview, outlined the incident that led to Gonzales serving a six-month stint in the Bexar County Jail.

"He said, '7939, I know where you live, bitch,'" she recalled, asking that she not be identified by name because she still fears for her safety. "He threatened to kill me, to cut my dog's throat. I had never spoken to him before."

To read more about the September 2013 case, and the interview with the 44-year-old elementary school teacher, go to expressnews.com.